component
LM20333MHX
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Texas Instruments DC-DC Converters, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+57@@ -0,0 +1,57 @@+# LM20333MHX++**Texas Instruments** · DC-DC Converters · HTSSOP-20-EP++LM20333MHX from Texas Instruments, in a HTSSOP-20-EP. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | SS/TRK | input | Soft-start or tracking control input: an internal 4.5 µA source charges the external soft-start capacitor, the PWM can track an external low-impedance voltage ramp, and if left open an internal 1 ms soft-start ramp is used. |+| 2 | FB | input | Feedback input connected to the inverting input of the internal transconductance error amplifier, which is referenced to the internal 800 mV reference. |+| 3 | PGOOD | output | Open-drain power-good output indicating the output voltage is regulating within tolerance; a 10 kΩ to 100 kΩ pull-up resistor is recommended if used. |+| 4 | COMP | passive | Output of the internal error amplifier and input to the PWM; the loop compensation network connects between COMP and AGND. |+| 5 | VIN | power_in | Input supply voltage with a nominal operating range of 4.5 V to 36 V. |+| 6 | VIN | power_in | Input supply voltage with a nominal operating range of 4.5 V to 36 V. |+| 7 | SW | output | Switch node: the drain of the internal synchronous rectifier power NMOSFET and the source of the internal control power NMOSFET. |+| 8 | SW | output | Switch node: the drain of the internal synchronous rectifier power NMOSFET and the source of the internal control power NMOSFET. |+| 9 | GND | power_in | Ground, the internal reference for the power MOSFETs. |+| 10 | GND | power_in | Ground, the internal reference for the power MOSFETs. |+| 11 | GND | power_in | Ground, the internal reference for the power MOSFETs. |+| 12 | AGND | power_in | Analog ground, the internal reference for the regulator control functions. |+| 13 | SW | output | Switch node: the drain of the internal synchronous rectifier power NMOSFET and the source of the internal control power NMOSFET. |+| 14 | SW | output | Switch node: the drain of the internal synchronous rectifier power NMOSFET and the source of the internal control power NMOSFET. |+| 15 | VIN | power_in | Input supply voltage with a nominal operating range of 4.5 V to 36 V. |+| 16 | VIN | power_in | Input supply voltage with a nominal operating range of 4.5 V to 36 V. |+| 17 | BOOT | power_in | Boost input for the bootstrap capacitor, connected from SW to BOOT to power the control MOSFET gate driver; an internal diode from VCC charges it. |+| 18 | VCC | power_out | Output of the high-voltage linear regulator that tracks VIN up to about 7.2 V and regulates to approximately 5.5 V; it needs a 0.1 µF to 1 µF ceramic decoupling capacitor and is output only. |+| 19 | EN | input | Enable and UVLO input: an external voltage divider sets the line undervoltage lockout threshold, and an internal 2 µA pull-up enables the regulator if the pin is left unconnected. |+| 20 | SYNC | input | Frequency synchronization input: an external clock sets the switching frequency (synchronizable from 250 kHz to 1.5 MHz), and if left open the device runs at approximately 200 kHz. |+| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | HTSSOP-20-EP |+| Category | Power Management (PMIC) |+| Pins | 21 |++## CAD (KiCad official)++- Symbol: `LM20333MHX`+- Footprint: `Package_SO:TSSOP-20-1EP_4.4x6.5mm_P0.65mm_EP2.15x3.35mm`+- 3D model: HTSSOP-20-EP, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.2 mm nominal TSSOP height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)+- 3D model files: `lm20333mhx-etched.step` / `lm20333mhx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm20333mhx.step` / `lm20333mhx.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lm20333) (33 pp, sha256 `6bfea80a6826023b`, retrieved 2026-10-08, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/lm20333mhx-datasheet.pdf)
page.jsonadded+277@@ -0,0 +1,277 @@+{+ "slug": "lm20333mhx",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments DC-DC Converters, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power management (pmic)",+ "lm20333mhx",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lm20333mhx.kicad_sym",+ "lm20333mhx.kicad_mod",+ "lm20333mhx.glb",+ "lm20333mhx.step",+ "lm20333mhx.lbr",+ "docs/hero.png",+ "docs/lm20333mhx-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "lm20333mhx-hero.glb",+ "lm20333mhx-hero.overlay.json"+ ],+ "component": {+ "mpn": "LM20333MHX",+ "manufacturer": "Texas Instruments",+ "package": "HTSSOP-20-EP",+ "pin_count": 21,+ "category": "Power Management (PMIC)",+ "subcategory": "DC-DC Converters",+ "datasheet": "https://www.ti.com/cn/lit/gpn/lm20333",+ "parts": {+ "symbol": "lm20333mhx.kicad_sym",+ "footprint": "lm20333mhx.kicad_mod",+ "model_3d": "lm20333mhx-hero.glb",+ "model_3d_plain": "lm20333mhx.glb",+ "model_3d_step": "lm20333mhx-etched.step",+ "model_3d_step_plain": "lm20333mhx.step",+ "lbr": "lm20333mhx.lbr"+ },+ "distributor_links": {+ "lcsc": "C1880422"+ },+ "distributor_check": {+ "checked_at": "2026-10-08T14:51:45Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": null,+ "status": "no match"+ },+ "mouser": {+ "pn": null,+ "status": "no match"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "SS/TRK",+ "type": "input",+ "description": "Soft-start or tracking control input: an internal 4.5 µA source charges the external soft-start capacitor, the PWM can track an external low-impedance voltage ramp, and if left open an internal 1 ms soft-start ramp is used."+ },+ {+ "number": "2",+ "name": "FB",+ "type": "input",+ "description": "Feedback input connected to the inverting input of the internal transconductance error amplifier, which is referenced to the internal 800 mV reference."+ },+ {+ "number": "3",+ "name": "PGOOD",+ "type": "output",+ "description": "Open-drain power-good output indicating the output voltage is regulating within tolerance; a 10 kΩ to 100 kΩ pull-up resistor is recommended if used."+ },+ {+ "number": "4",+ "name": "COMP",+ "type": "passive",+ "description": "Output of the internal error amplifier and input to the PWM; the loop compensation network connects between COMP and AGND."+ },+ {+ "number": "5",+ "name": "VIN",+ "type": "power_in",+ "description": "Input supply voltage with a nominal operating range of 4.5 V to 36 V."+ },+ {+ "number": "6",+ "name": "VIN",+ "type": "power_in",+ "description": "Input supply voltage with a nominal operating range of 4.5 V to 36 V."+ },+ {+ "number": "7",+ "name": "SW",+ "type": "output",+ "description": "Switch node: the drain of the internal synchronous rectifier power NMOSFET and the source of the internal control power NMOSFET."+ },+ {+ "number": "8",+ "name": "SW",+ "type": "output",+ "description": "Switch node: the drain of the internal synchronous rectifier power NMOSFET and the source of the internal control power NMOSFET."+ },+ {+ "number": "9",+ "name": "GND",+ "type": "power_in",+ "description": "Ground, the internal reference for the power MOSFETs."+ },+ {+ "number": "10",+ "name": "GND",+ "type": "power_in",+ "description": "Ground, the internal reference for the power MOSFETs."+ },+ {+ "number": "11",+ "name": "GND",+ "type": "power_in",+ "description": "Ground, the internal reference for the power MOSFETs."+ },+ {+ "number": "12",+ "name": "AGND",+ "type": "power_in",+ "description": "Analog ground, the internal reference for the regulator control functions."+ },+ {+ "number": "13",+ "name": "SW",+ "type": "output",+ "description": "Switch node: the drain of the internal synchronous rectifier power NMOSFET and the source of the internal control power NMOSFET."+ },+ {+ "number": "14",+ "name": "SW",+ "type": "output",+ "description": "Switch node: the drain of the internal synchronous rectifier power NMOSFET and the source of the internal control power NMOSFET."+ },+ {+ "number": "15",+ "name": "VIN",+ "type": "power_in",+ "description": "Input supply voltage with a nominal operating range of 4.5 V to 36 V."+ },+ {+ "number": "16",+ "name": "VIN",+ "type": "power_in",+ "description": "Input supply voltage with a nominal operating range of 4.5 V to 36 V."+ },+ {+ "number": "17",+ "name": "BOOT",+ "type": "power_in",+ "description": "Boost input for the bootstrap capacitor, connected from SW to BOOT to power the control MOSFET gate driver; an internal diode from VCC charges it."+ },+ {+ "number": "18",+ "name": "VCC",+ "type": "power_out",+ "description": "Output of the high-voltage linear regulator that tracks VIN up to about 7.2 V and regulates to approximately 5.5 V; it needs a 0.1 µF to 1 µF ceramic decoupling capacitor and is output only."+ },+ {+ "number": "19",+ "name": "EN",+ "type": "input",+ "description": "Enable and UVLO input: an external voltage divider sets the line undervoltage lockout threshold, and an internal 2 µA pull-up enables the regulator if the pin is left unconnected."+ },+ {+ "number": "20",+ "name": "SYNC",+ "type": "input",+ "description": "Frequency synchronization input: an external clock sets the switching frequency (synchronizable from 250 kHz to 1.5 MHz), and if left open the device runs at approximately 200 kHz."+ },+ {+ "number": "21",+ "name": "EP",+ "type": "passive",+ "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-5-5",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: The exposed pad is not a numbered lead; it is printed as 'EP' and is listed here as passive with a w; COMP is the error-amplifier output and PWM input; datasheet gives no KiCad-class term, so passive wa; PGOOD is an open-drain output; mapped to KiCad 'output'. An open-collector/open-drain class may be p",+ "exposed pad 21 added from the footprint",+ "dropped thermal pad ['EP'] absent from footprint"+ ],+ "pages_sent": 6,+ "cost_usd": 0.057,+ "at": "2026-10-08T14:51:21"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/lm20333",+ "pages": 33,+ "sha256": "6bfea80a6826023b",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 21,+ "described": 21,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "lm20333mhx.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6.41,+ 6.5,+ 1.2+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "b0c803341b8a3d4e8ee2a5350aaf9d023bf8aad9fc15670a7cc9aa57aac12871",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "lm20333mhx-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6.41,+ 6.5,+ 1.2+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "c47def86601b94b2c4a9986ef38cd0c85ae7e00c27f4d433a37642fc7c5d70a0",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}